Addscour – A Complete Bio-Scouring Solution
Need of Bio-Scouring
Grey cotton at any form will be scoured in order to remove natural and foreign impurities and make the fabric Hydrophilic. Desired scouring can be achieved by removing wax and fat from Cuticle, Pectin, Hemicellulose and Proteinaceous matter from primary wall.
Today, highly alkaline chemicals like caustic soda, soda ash, silicate, and soaping agents are used for scouring to remove the non-cellulosic impurities from the cotton. Use of 3-4% NaOH on weight of fabric, results in destruction of cotton structure. Intensive rinsing and more acid are needed for neutralization of cotton, which enlarges the volume of effluence. Furthermore, these hazardous chemicals result in increase in COD (Chemical Oxygen Demand), BOD (Biological Oxygen Demand) and TDS in the waste water. These chemicals also attack the cellulose leading to heavy strength loss and weight loss in the fabric. The net result is low quality cotton and polluted environment with high usage of energy, chemicals and water.
Need of Bio-Scouring Package
In Bio-Scouring process, one can obtain better results using Bio-Scour Package. Enzymes which are substrate specific will only attack natural and foreign impurities resulting in better quality cotton and eco friendly environment.
Cotton Structure
Cotton, when we studied in details, has the following structure:
Here we can see that in outer layer, which include cuticle, primary and winding layer contains the impurities that we want to remove in order to get hydrophlic cotton. This specific attacking is possible only through enzymes that are substrate specific.
AETL Bio-Scouring Packge
Products
AddscourP: Blended enzymes for Bio-Scouring
SebauxWDS: Dispersing agent
SebwetCP: Wetting agent
Bio-Scouring Process
1. Scouring & Bleaching - Hotwash
2. Neutralization & Killing - Peroxide
Charge Sebwet CO-0.3% (A) at room temp, raise temp to 60¬¬0C and add a dose Addscoure P-0.8 (B). maintain temperature for 20 min, raise temp to 950C and charge SebauxWDS-0.25%, H2O2, H2O2 - 1.5% & SodaAsh – 1%.
Advantages
1. Produces lower weight loss
2. Less pollutant to the waste water, 50% reduction in COD, BOD and TDS
3. Lower energy consumption
4. Less aggressive for the fabric and for the environment
5. Provides a safe working environment
6. Soften cotton textiles
7. Reduced water consumption
8. Complete removal of non-cellulosic impurities
9. Uniform and high absorptive preteated goods
10. High accessibility of cotton substrate for dyestuff uptake